rad_org Didymocyrtis laticonus img1278.jpg
arrayname: original
rad_org Didymocyrtis laticonus img1278.jpg
1959 Cannartus laticonus - Riedel p.291, pl. 1, fig. 5
1978 Cannartus laticonus - Westberg and Riedel p. 20, pl. 2, figs. 1-3
1980 Didymocyrtis laticonus - Sanfilippo and Riedel p.1010, pl. 1, fig. e
1985 Didymocyrtis laticonus - Morley pl. 8, fig.5
From Suzuki Paleotax db:
1959 Cannartus laticonus n. sp. Riedel p. 291-292, pl. 1, fig. 5
1970 Cannartus laticonus Riedel Riedel & Sanfilippo p. 520, pl. 14, fig. 2
1971 Cannartus laticonus Riedel Kling p. 1086, pl. 3, fig. 6
1971 Cannartus laticonus Riedel Moore p. 736, pl. 12, fig. 6
1971 Cannartus laticonus Riedel Riedel & Sanfilippo p. 1587, pl. 1C, figs. 13, 14
1972 Cannartus laticonus Riedel et Sanfilippo Goll p. 955-956, pl. 1, figs. 1, 2
1973 Cannartus laticonus Riedel Dinkelman p. 766, pl. 8, fig. 4
1973 Cannartus laticonus Riedel Kling p. 634, pl. 7, fig. 7
1973 Cannartus laticonus Riedel Nakaseko & Sugano pl. 2, fig. 8a, 8b
1973 Cannartus laticonus Riedel Sanfilippo et al. p. 216, pl. 1, fig. 6 (only)
1973 Cannartus laticonus Riedel Sanfilippo et al. p. 216, pl. 1, figs. 4, 5 (not pl. 1, fig. 6)
1974 Cannartus laticonus Riedel Johnson p. 544, pl. 7, fig. 2
1974 Cannartus laticonus Riedel Kruglikova pl. 3, figs. 1, 2
1974 Cannartus laticonus Riedel Nigrini p. 1064, pl. 5, fig. 2
1975 Cannartus ex gr. laticonus Riedel Dumitrica et al. pl. 6, figs. 3, 4
1975 Cannartus laticonus Riedel Foreman pl. 8, fig. 4
1975 Cannartus laticonus Riedel Ling p. 717, pl. 2, figs. 3, 4
1975 Cannartus laticonus Riedel Nakaseko & Nishimura p. 53, pl. 4, figs. 3, 5
1975 Cannartus laticonus Riedel group Petrushevskaya p. 577, pl. 7, figs. 9, 10
1976 Cannartus laticonus Riedel Nakaseko & Sugano pl. 4, fig. 4
1976 Cannartus laticonus Riedel Takayanagi et al. pl. 2, fig. 3
1977 Cannartus laticonus Riedel (s.s.) Oda & Sakai pl. 3, fig. 1a, 1b
1977 Cannartus laticonus Riedel Nakaseko pl. 6, fig. 23
1977 Cannartus laticonus Riedel form B Oda & Sakai pl. 3, fig. 4
1977 Cannartus laticonus Riedel morphotype Riedel & Sanfilippo pl. 20, fig. 5
1978 Cannartus ex gr. laticonus Riedel Dumitrica p. 238, pl. 4, figs. 1, 2
1978 Cannartus laticonus Riedel Riedel & Sanfilippo p. 66, pl. 4, fig. 1
1978 Cannartus laticonus Riedel Sugano & Nagata pl. 3, fig. 2
1978 Cannartus laticonus Riedel Theyer et al. pl. 1, fig. 7
1978 Cannartus laticonus Riedel Westberg & Riedel p. 20, pl. 2, figs. 1-3
1979 Cannartus laticonus Riedel Sachs & Fairbanks text-fig. 3b
1980 Cannartus laticonus Riedel Sakai p. 705, pl. 3, figs. 7a, 7b, 8a, 8b
1980 Didymocyrtis laticonus (Riedel) Sanfilippo & Riedel text-fig. 1e
1981 Cannartus laticonus Riedel Wolfart p. 497, pl. 5, figs. 6, 7
1981 Didymocyrtis laticonus (Riedel) Weaver et al. p. 84, pl. 6, figs. 9-11
1982 Cannartus laticonus Riedel Sakai p. 192, pl. 96, fig. 878
1982 Didymocyrtis laticonus (Riedel) Nagata pl. 2, fig. 9
1983 Cannartus laticonus Riedel Takemura & Hirota pl. 1, fig. 3
1984 Didymocyrtis laticonus (Riedel) Nigrini & Lombari S53-S54, pl. 7, figs. 1a-1c
1985 Didymocyrtis laticonus (Riedel) Morley p. 410, pl. 8, fig. 5
1985 Didymocyrtis laticonus (Riedel) Sanfilippo et al. p. 658, figs. 8.5a, 8.5b
1986 Cannartus laticonus Riedel Taketani et al. pl. 5, fig. 5
1986 Cannartus laticonus Riedel Levyikina p. 99, pl. 8, fig. 10
1987 Cannartus laticonus Riedel Watanabe pl. 5, fig. 5
1987 Didymocyrtis laticonus (Riedel) Nishimura & Ishiga p. 725, pl. 4, figs. 14-17, pl. 6, figs. 7-10
1987 Didymocyrtis laticonus (Riedel) Nishimura pl. 4, figs. 14, 17, pl. 6, figs. 8-10
1987 Didymocyrtis laticonus (Riedel) Nishimura pl. 4, figs. 15, 16
1988 Didymocyrtis laticonus (Riedel) Palmer pl. 1, fig. 8
1989 Didymocyrtis laticonus (Riedel) Yanagisawa et al. pl. 12, fig. 9
1992 Didymocyrtis laticonus (Riedel) Wang & Yang p. 99, pl. 1, figs. 7, 8 (not 3, 4)
1999 Diartus laticonus (Riedel) Tsoy & Shastina pl. 26, figs. 4, 5
Catalog entries: Cannartus laticonus
type material: C. laticonus
type material: C. laticonusOriginal description: Cortical twin-shell rather thick-walled, with pores subcircular or circular, ten to thirteen on the half-equator. On the broader parts of the shell, on either side of the equatorial constriction, are pronounced obtuse moundlike protuberances, at which the shell wall is thickened; there is a tendency in some specimens for these protuberances to be so arranged that two girdles of them encircle each half of the twin-shell. At each pole of the shell arises a broadly subconical, densely spongy column, which is almost as broad at its base as the polar surface of the twin-shell. Medullary shells two (or perhaps only one in some specimens), of which the inner is spherical and the outer spherical or lenticularly compressed. This species is distinguished from all others of the genus by the broadly subconical polar columns.
Remarks on original description: This species is one of a remarkable series of forms which evidently arose in the Upper Oligocene and underwent rapid evolutionary changes during the Miocene. They apparently represent the phyletic connection between the genus Pipettella, in which an ellipsoidal cortical shell without equatorial constriction bears subcylindrical spongy polar columns, and the panartids, in which the equatorially constricted cortical shell bears latticed polar caps. It has previously been shown (Riedel, 1957) that a common late Tertiary panartid, Panarium penultimum, has distinct polar caps surmounted by spongy polar columns, and the author has pointed out that this species probably developed from a form having less conspicuous polar caps and wider terminal spongy columns.
Geological Range:
Last occurrence (top): within Neogene Period (2.59-23.03Ma, top in Piacenzian stage). Data source: Lazarus et al. 2015 - "N age group"
First occurrence (base): within Neogene Period (2.59-23.03Ma, base in Aquitanian stage). Data source: Lazarus et al. 2015 - "N age group"
Plot of occurrence data:
Morley, J. J. (1985). Radiolarians from the northwest Pacific, Deep Sea Drilling Project Leg 86. Initial Reports of the Deep Sea Drilling Project. 86: 399-422. gs Riedel, W. R. (1959a). Oligocene and Lower Miocene Radiolaria in tropical Pacific sediments. Micropaleontology. 5(3): 285-302. gs Sanfilippo, A. & Riedel, W. R. (1980). A revised generic and suprageneric classification of the Artiscins (Radiolaria). Journal of Paleontology. 54(5): 1008-1011. gs Sanfilippo, A., Westberg-Smith, M. J. & Riedel, W. R. (1985b). Cenozoic Radiolaria. In, Bolli, H. M. , Saunders, J. B. & Perch-Nielsen K. (eds) Plankton Stratigraphy. Cambridge University Press, Cambridge 631-712. gs Westberg, M. J. & Riedel, W. R. (1978). Accuracy of radiolarian correlations in the Pacific Miocene. Micropaleontology. 24(1): 1-23. gsReferences:
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Didymocyrtis laticonus compiled by the radiolaria@mikrotax project team viewed: 20-4-2025
Short stable page link: https://mikrotax.org/radiolaria/index.php?id=203948 Go to Archive.is to create a permanent copy of this page - citation notes |
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